What topics are tested on the C100DBA: MongoDB Certified DBA Associate Exam?

Required MongoDB Knowledge

Philosophy & Features: performance, JSON, BSON, fault tolerance, disaster recovery, horizontal scaling, and the Mongo shell
CRUD: Create, Read, Update, and Delete operations
Indexing: single key, compound, multi-key, mechanics, and performance
Aggregation: pipeline, operators, memory usage, sort, skip, and limit
Replication: configuration, oplog concepts, write concern, elections, failover, and deployment to multiple data centers
Sharding: components, when to shard, balancing, shard keys, and hashed shard keys
Application Administration: data files, journaling, authentication, and authorization
Server Administration: performance analysis, storage engines, diagnostics and debugging, maintenance, backup, and recovery

Required General IT Knowledge